Oleksandr Sinner
12+ years of experience in full-stack development — React, React Native, TypeScript, Node.js, and IoT systems, from architecture to production delivery.
12+ Years
Professional ExperienceLead Full Stack Engineer
I'm Oleksandr Sinner, a Lead Software Engineer with 12+ years of experience in full-stack development, covering both frontend and backend systems. Over the past 7 years I have been working in Technical Lead roles, primarily using React, React Native, Angular, and Node.js.
I have broad experience with modern JavaScript ecosystems and a strong understanding of the full development lifecycle — from architecture and design to production delivery. I focus on building solutions that align with business goals while maintaining high standards of performance, scalability, and maintainability.
Throughout my career I have worked on complex projects including IoT-based systems (GPS tracking, smart device platforms), smart home solutions, real-time applications, CMS, and various business platforms. I hold a Master's degree in Computer Science and enjoy mentoring developers and driving projects forward.
12+ Years
Full-Stack Experience
Building web & mobile apps since 2012
7+ Years
Technical Lead Roles
Leading teams and driving architecture
IoT & Real-Time
Systems Expert
GPS tracking, smart devices, telemetry
Israchem
& PerceptionBox
Key companies in career journey
Skills & Technologies
Core strengths: React, React Native, TypeScript, real-time systems and IoT integration. 12+ years of hands-on experience from jQuery and AngularJS to modern React and Node.js ecosystems.
Years of Experience by Technology
14+
JavaScript
10+
React.js
8+
TypeScript
8+
React Native
9+
Node.js
9+
Angular
Programming Languages
JavaScript (ES6+)
90%
TypeScript
90%
Node.js
70%
PHP
80%
Frontend & Mobile
React
95%
React Native
95%
Angular
80%
Redux / State Mgmt
90%
Backend & Databases
Node.js REST APIs
70%
MongoDB
70%
MySQL
70%
API Design & Integration
80%
Cloud & Testing
AWS
70%
Git
90%
Jest (Unit Testing)
70%
Appium (E2E)
50%
Also Experienced With
Work Experience
12+ years of progressive experience in frontend development, from full-stack roles to leading development teams on enterprise projects.
Senior Full Stack Engineer
Israchem
11.2024 – Present
Design and implement modern web applications and mobile web views using cutting-edge technologies.
Building full-stack solutions with React.js, React Native, and Node.js
Working with Ruby and Angular on backend and frontend integration
Implementing NoSQL and MySQL/SQLite database solutions
Delivering responsive, high-performance web and mobile experiences
Senior Full Stack Engineer
PerceptionBox
03.2015 – 11.2024
Led design and implementation of modern web applications, mobile apps, and IoT systems across a wide range of industries.
Served as Lead JS Developer on multiple high-impact projects
Architected IoT platforms: smart pet collars (Expo/React Native/Redux) and smart lamps admin panel (React/TypeScript)
Built video streaming platform on AWS and real-time home security app (Ola) with live video
Developed GetAlert mobile app for home security using NativeScript and Angular 5
Led composedream.com CMS with React/Redux and Node.js/MySQL full-stack
Built business social network and trips platform with AngularJS, Angular 4, and Ionic
Mentored developers, established coding standards and architectural best practices
Web Developer
5-Soft
05.2012 – 03.2015
Implemented frontend and backend for various web applications: shops, social networks, education systems.
Built social network + e-commerce solution for African Americans (PHP, Backbone.js, SphinxSearch)
Developed Atelieroom time management app with jQuery and AngularJS
Created online cinema Cinemaxx with FFmpeg, PHP, Nginx, MySQL
Delivered i-compass job marketplace for tutors and translators (PHP/Yii)
Web Developer
Continent Watches
09.2011 – 05.2012
Support and implementation of new features for an internet shop.
Maintained and extended the e-commerce platform
Implemented new product and category features
Featured Projects
A selection of 20+ projects delivered over 12 years, showcasing expertise in React, React Native, Angular, Node.js, and modern web technologies.
Smart Pet Collars Platform
Mobile and web application for pets' smart collars with real-time tracking and health monitoring. Cross-platform solution built with Expo and React Native.
Video Streaming Platform
Web application for video streaming built on AWS infrastructure with Node.js backend and real-time video processing pipelines.
Ola — Home Security App
Mobile and web application with live video streaming for home security monitoring. Real-time data and external system integrations.
Smart Lamps IoT Dashboard
Admin panel for smart lamps control with real-time device management and IoT integration.
Business Travel Planning Platform
Web platform for business trips planning and management. Migrated from Angular.js to modern Angular with TypeScript.
Automotive Mobile App
Cross-platform mobile application for the automotive industry.
GetAlert — Home Security
Mobile application with live video streaming for home security, built with NativeScript and Angular 5.
ComposeDream CMS
Unique content management system for a large company with React/Redux frontend and Node.js + MySQL backend.
Automotive CMS
Unique content management system for a major automotive company built with PHP/Yii and jQuery.
Business Social Network
Business trips and advisors social network with Ionic mobile support and AngularJS/Angular 4 frontend.
Nodeconductor
Services management application for Opennode with Angular and React.js frontend.
African Americans Social Network & E-commerce
Full-stack social network with e-commerce solution, advanced SphinxSearch integration and PHP/Backbone.js stack.
Contact Me
Have a project in mind or want to discuss opportunities? I'd love to hear from you.
Let's Connect
I'm always open to discussing new projects, creative ideas, or opportunities to be part of your vision.